科研之友
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摘要
PURPOSE: To evaluate the visual outcomes, predictability and planarity of four types of 60-kHz femtosecond laser-assisted LASIK flaps: 90, 100, 110, and 120 mu m.
METHODS: This randomized, prospective; interventional comparative trial was performed at a tertiary care facility Two hundred forty eyes with a calculated residual bed thickness >300 mu m (at 120 mu m flap thickness and subjective refraction) were randomized into four flap thickness groups to Undergo femtosecond laser assisted LASIK. Pre- and postoperative assessment included uncorrected visual acuity. best spectacle-corrected visual acuity (BSCVA), and refraction. Flap thickness was assessed by anterior segment optical coherence tomography ob 28;points per flap at 1-month follow-up. three new. indices Were devised to assess the predictability and planarity.
RESULTS: The baseline parameters were matched Postoperative vision and refractive outcome were similar in the four groups (P>.05, analysis of Variance). The achieved flap thickness was different at each measured point among the groups (P<.05) with standard deviations ranging from +/- 3.2 to +/- 7.3 mu m. The predictability and planarity were satisfactory in all four groups, although the indices were slightly better in the 110-mu m and 120-mu m groups, No loss of BSCVA or flap complications occurred in the four groups.
CONCLUSIONS: The study demonstrated that all four flap thicknesses are relatively uniform in predictability and clinical outcomes. [J Refract Surg. 2010:26,(6):392-402.] doi: 10.3928/1081597X-20090728-02
- 出版日期2010-6
